ii vs isi, What's the Difference?

Which to use

“ii” is an adverb and “isi” is a verb - they look or sound alike but fill different roles in a sentence.

#627
“ii” frequency rank: #49,170
“isi” frequency rank: 49797
confusion score

Side-by-Side Comparison

Feature	ii	isi
Definition	Oui.	Deuxième personne du singulier du futur de l’indicatif du verbe isal/isañ.

Where the eye mixes ii and isi

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

2 ch

3 ch

isi

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: ii is \iː\ while isi is \ˈisːi\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adverb vs verb), which is usually the fastest check. Our composite confusion score for this pair is 49797, derived from the frequency rank of both members and their visual similarity.

ii is recorded at frequency rank #627, classified as anadv, pronounced \iː\. isi is at rank #49,170, tagged as averb, pronounced \ˈisːi\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 49797, this pair ranks #167,795 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ii vs isi

Shared letters: i. Private to "ii": -. Private to "isi": s.

"ii" · 2 letters · shape VV · "isi" · 3 letters · shape VCV

Frequently Asked Questions

Can "ii" and "isi" be used interchangeably?

No - they are not even the same part of speech. "ii" is an adverb and "isi" a verb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ii" or "isi"?

"ii" is the more common of the two: it sits at frequency rank #627 in our French list, against #49,170 for "isi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "ii" and "isi". Here's where to go from here.

Full dictionary entry for "ii" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "isi" - compare definitions side by side with the headword page. Word entry
This pair ranks #167,795 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"ii" and "isi" also get mixed up with nearby pairs, the highest-scored neighbour is "ime vs isi". Nearby pair

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.